Fraud possible in Brazil's e-voting system 12 years ago
The original 2012 article about the forum on security: http://pdt.org.br/index.php/noticias/voto-eletronico-hacker-...
Further on topic: http://folhapolitica.jusbrasil.com.br/noticias/112550665/pro...
(all articles pt-br only)